Differential speed-changing mechanism.



APPLOATION FILED DEO.13,1912.

SHEETS-45mm? 2. v

latented Aug. 5, 1913 V I'. I. & B. P. REMY & A. BERGER, DIFFERENTIAL SPEED CHANGING MBGHANISM.

APPLICATION FILED DBO. 13, 1912.

1,069,182. Patented Aug. 5, 1913;

3 SHEETS-SHEET 3.

BY Hmm/R BLUME?? said shafts, one of the UNTTED sTaTns PATENT orario FRANK. I. REMY, BENJAMIN P. REMY, AND ARTHUR BERGER, 0F ANDERSON, I'NDIAW,

ASSIGNORS TO .REMY BROTHERS COMPANY, OF ANDERSON, INDIANA, A CPAET- NERSHIP.

DIFFERENTIAL SPEED-CHANGING MECHANISM.

Specification of Letters Patent.

rai-.enten augaaiais.

Application filed December 13, 1912. Serial No. 736,524.

To all 'zu/wm 2'25 may concern Be it known that we, FRANK I. REMY, BENJAMIN P. REMY, and ARTHUR BERGER, citizens ot the United States, and residents ot Anderson, county of Madison', and State ot indiana. have invented a certain new and useful Differential Speed-Changing Mechanism; and -we do hereby declare that the 'following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like letters refer to like parts.

The object of this invention is to provide mechanism for varying the relative speeds of two shafts.

The invention has been made with particular reference to use in connection with traction engines, automobiles and like vehicles, for steering or turning the same through the drive wheels thereof by varying the speeds of the shafts which drive said wheels. ln this invention there is a diiterential gear mechanism in connection with said shafts, and means provided for changing the speed of said gear, and additional means for transmitting power from each of said shafts and parts arranged so that, when it is desired to change the speed of direct driving Iheans is thrown out oi' operation so that only one shaft is driven directly and the other shaft is driven through the differential gearing and the speed thereot` regulated by changing the speed of rotation of the differential gearing. straight ahead, the differential not utilized and it is used only ing speed.

or chang- The nature of the invention will be iin-t derstood from the accompanying drawings and the following description and claims.

ln the drawings, Figure 1 is a horizontal section through the power transmitting mechanism, the end of the shafts being )roken away and the parts shown so as to drive both shafts at equal speed. Fig. 2 is a transverse section on the line 2-2 of Fig.

l. parts being broken away. Fig. 3 is a section through the casing -to one side of the shat'ts and showing the mechanism within the casing in elevation and with the parts arranged so as to drivr,` the lett-hand shaft directly and the right-hand shaft through the differential gearing at slower speed. Fig. 4 is the same as Fig. 3, with parts rellfhen the mechanism is operated 1gearing 1s versed so that the right-hand shaft is driven directly and the left-hand shaft is driven at slower speed.l Fig. 5 is a centralhorizontal section through a modified form 'of the mechanism, one cone pulley being in elevation and showing only one set. of gears. Fig. 6 is a section on the line 6-6 of Fig. 5, with the lower part of the casing broken away.

In the drawings there is shown a frame or housing 10-in which the driven shafts 11 and 12 are mounted in alinement with each other and on each shaft a spur gear 13 which meshes all oi the time with a spur gear 14 loosely mounted on the driving shaft 15, the right-hand end of which is broken away, but power is transmitted to it from some suitable source. rlie gears 14 are clutched with the driving shatt- 15 by sliding clutches 17 on the shaft 15 which are springactuated by the springs 18 surrounding said shaft and lying between the housing and the clutch. The clutchesv are disengaged from the gears by the clutch levers 20 which are secured on shafts 21 mounted in bearings 22 connected with the frame, each shaft having secured to it an arm 23 carrying on its outer end a transverse rod 123 upon which the recessed end of a shifting bar 24 rests. Said shifting bar has secured to it a handle 25 so that the bar can be rocked and when rocked to the left, as shown in Fig. 3, the bar 24 will cause the disengagement ot' the right-hand elutclnbut the other end of the bar 24 will disengage the rod 123 on the arm 23 and then the spring 18 will throw the left-hand clutch into engagement with the gear 1l. When the handle 25 is rocked to the right, as shown in Fig. 4, the'opposite result follows. l.Upon the driving shaft between the gears 11 there is secured a cone friction pulley 30 having at its largest point a truly cylindrical portion. There 1s aniinversely arranged conical pulley 31 loosely mounted on the two sha ts 1l and 12 enveloping their `iunckture and adapted to he driven by the cone pulley 3() through the intervention of a belt 32 which is movable or adjustable between said cone pulleys by the shifting arms .8i-l secured on a shaft 34 mounted in the housing, as shown in Fig. 2, and which at their inner ends have'rings 35 which surround the belt 32 and whereby the same is held and shifted. On the shaft 34 there is ashortfifimiifi in spvcd, und

in the right, Smid .shaft l"l i Iy ifihii'ed 111 spoed.

whtimi:

11 nimemenf, wiih @zich A iiuiupeuchut menus i: of .wid shafts, und imams :it Liu.; iefhhzuni fihafi u mi @zich hij Sniii driven shzifi/s :imi said 1h@ cvhifi mi? and 4 Whig Shaft, one gen1' hij' ach pair being; n.; ahhh/ing '-,ihwifg hmm-rij; iiiminieih :L willich ifm' chichiiiggj thv wi i, hi: czwu bu lima-if; n'muncd gnu' ou ifs shaft, zi diiifci if) thi) Tight 'The i'aainivi intimi gmlihg'in ummm" wih said ih'ivvn if@ muy im fuiimi ,hni'if, and mmm im' sinmitnmuilsly mi of hv heh iin-owing; ou@ of Suid, ci 'i .ches mit (if hiperahe :ai i Limi sind rzpiii diim'utiul gwn-ing into nl @nimm mui, vine veixszl.

` Viv' ,i lit, 2 1 pail of fhiwn shafts fiiheiy :i fiiii'cimitini Cil said cones, and means for shifting said belt for varying the speed of said differential gearine'.y

8. A driving shaft, a pair of driven shafts in alinement with each other, means for driving each driven shaft directly from the driving shaft, Ya differential gearing connecting the two driven shafts, means for driving said differential gearing, and means for simultaneously throwing either of said direct driving means out of operation and throwing the differential gearing driving means into operation.

S). A driving shaft, a air of driven shafts in'alinement with eac other, means for driving each driven shaft directly from the driving shaft., a differential gearing con meeting the two driven shafts, means for driving said differential gearing, and means for simultaneously throwing both of said driving means into operation and said differential gearing driving ineans out of operation.

lO. A driving shaft, a pair of driven shafts in aline-ment with each other, means for driving each driven shaft directly from the driving shaft, a differential gearing con neeting the two driven shaftsl` means for driving said differential gearing, a clutch for throwing each direct driving means into and out of operation, and means for simultaneously throwing hoth clutches into operation and said differential gearing driving mechanism out of operation.

y11. A driving shaft, a pair of driven shafts in alineinent with each other. inea-ns for driving each driven shaft directly from the driving shaft, a differential gearing connecting the two driven shafts, means for driving said differential gearing, a Cluteh for throwing each dirent driving means into and ont of operation` and means for simultaneously throwing one of said clutches into operation and the other clutch out of operalion and the. differential gearing driving means into operation. I i12. A driving shaft, a pair of driven `shafts in alinenient with eax-h other, means lor driving eaeh driven shaft directly from the driving shaft, a diderential gearing oonneeting the two driven Shafts, means for driving said differential gearing, a Clutch for throwing each direct drivin@ means into and out of operation, springs said clutches into operation, a bell crank lever for throwing each clutch out of operation, a rocking bar for actuating each of/said bell crank levers, a handle for rocking lsaid bar, and means connected with said bar for throwing the differential gearing driving ineehanism into operation when either of said elutehes is thrown out of operation.

13. A driving shaft, a pair of parallel driven shafts in alinernent with each other and parallel with the driving shaft, a differ ential gearing connecting the tivo driven shafts, a cone pulley for actuatin said gearing, a reverse cone pulley on the drlving shaft, a shift-in belt between said cone ulleys for transmitting power from the pu ley on the driving shaft to the pulley on the differential gearing, a bell crank lever for shifting said belt from an operative to an inoperative position or the reverse, gearing for directly driving one of said driven shafts from the driving shaft, a eluteh for throwing either of said sets of gears out of and into operation, a spring for forcing each clutch into operative position, a bell crank lever for forcing each clutch out of open ative position, a rocking bar for actua-ting either clutch lever, and a connecting rod be tween said rocking bars and the hell crank for shifting said belt arranged so that when either clutch is thrown ont of operation, the belt will he moved into operative position and when both elutehesare in operative position, said belt will be in inoperative position.

In witness whereof, we have hereunto affixed our signatures in the presence of the witnesses herein named. i

FRANK l. REMY. BENJAMIN l). REll/Lliiv ARTHUR BERGER. lVitnesses: i

W. B. POLAND, RUTH l. Minnen.

fpor throwing 

